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-rw-r--r--drivers/base/Kconfig8
-rw-r--r--drivers/base/base.h2
-rw-r--r--drivers/base/bus.c116
-rw-r--r--drivers/base/class.c60
-rw-r--r--drivers/base/core.c281
-rw-r--r--drivers/base/cpu.c2
-rw-r--r--drivers/base/firmware_class.c15
-rw-r--r--drivers/base/memory.c3
-rw-r--r--drivers/base/platform.c26
-rw-r--r--drivers/base/power/Makefile4
-rw-r--r--drivers/base/power/main.c344
-rw-r--r--drivers/base/power/power.h47
-rw-r--r--drivers/base/power/resume.c149
-rw-r--r--drivers/base/power/runtime.c85
-rw-r--r--drivers/base/power/shutdown.c2
-rw-r--r--drivers/base/power/suspend.c210
-rw-r--r--drivers/base/power/sysfs.c66
-rw-r--r--drivers/base/power/trace.c5
-rw-r--r--drivers/base/sys.c73
19 files changed, 649 insertions, 849 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 5d6312e3349..d7da109c24f 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -1,5 +1,13 @@
menu "Generic Driver Options"
+config UEVENT_HELPER_PATH
+ string "path to uevent helper"
+ depends on HOTPLUG
+ default "/sbin/hotplug"
+ help
+ Path to uevent helper program forked by the kernel for
+ every uevent.
+
config STANDALONE
bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL
default y
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 47eb02d9f1a..10b2fb6c9ce 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -18,8 +18,6 @@ extern int attribute_container_init(void);
extern int bus_add_device(struct device * dev);
extern void bus_attach_device(struct device * dev);
extern void bus_remove_device(struct device * dev);
-extern struct bus_type *get_bus(struct bus_type * bus);
-extern void put_bus(struct bus_type * bus);
extern int bus_add_driver(struct device_driver *);
extern void bus_remove_driver(struct device_driver *);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 61c67526a65..9a19b071c57 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -30,6 +30,17 @@
static int __must_check bus_rescan_devices_helper(struct device *dev,
void *data);
+static struct bus_type *bus_get(struct bus_type *bus)
+{
+ return bus ? container_of(kset_get(&bus->subsys),
+ struct bus_type, subsys) : NULL;
+}
+
+static void bus_put(struct bus_type *bus)
+{
+ kset_put(&bus->subsys);
+}
+
static ssize_t
drv_attr_show(struct kobject * kobj, struct attribute * attr, char * buf)
{
@@ -78,7 +89,7 @@ static void driver_release(struct kobject * kobj)
*/
}
-static struct kobj_type ktype_driver = {
+static struct kobj_type driver_ktype = {
.sysfs_ops = &driver_sysfs_ops,
.release = driver_release,
};
@@ -122,9 +133,9 @@ static struct sysfs_ops bus_sysfs_ops = {
int bus_create_file(struct bus_type * bus, struct bus_attribute * attr)
{
int error;
- if (get_bus(bus)) {
+ if (bus_get(bus)) {
error = sysfs_create_file(&bus->subsys.kobj, &attr->attr);
- put_bus(bus);
+ bus_put(bus);
} else
error = -EINVAL;
return error;
@@ -132,9 +143,9 @@ int bus_create_file(struct bus_type * bus, struct bus_attribute * attr)
void bus_remove_file(struct bus_type * bus, struct bus_attribute * attr)
{
- if (get_bus(bus)) {
+ if (bus_get(bus)) {
sysfs_remove_file(&bus->subsys.kobj, &attr->attr);
- put_bus(bus);
+ bus_put(bus);
}
}
@@ -172,7 +183,7 @@ static int driver_helper(struct device *dev, void *data)
static ssize_t driver_unbind(struct device_driver *drv,
const char *buf, size_t count)
{
- struct bus_type *bus = get_bus(drv->bus);
+ struct bus_type *bus = bus_get(drv->bus);
struct device *dev;
int err = -ENODEV;
@@ -186,7 +197,7 @@ static ssize_t driver_unbind(struct device_driver *drv,
err = count;
}
put_device(dev);
- put_bus(bus);
+ bus_put(bus);
return err;
}
static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind);
@@ -199,7 +210,7 @@ static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind);
static ssize_t driver_bind(struct device_driver *drv,
const char *buf, size_t count)
{
- struct bus_type *bus = get_bus(drv->bus);
+ struct bus_type *bus = bus_get(drv->bus);
struct device *dev;
int err = -ENODEV;
@@ -219,7 +230,7 @@ static ssize_t driver_bind(struct device_driver *drv,
err = -ENODEV;
}
put_device(dev);
- put_bus(bus);
+ bus_put(bus);
return err;
}
static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind);
@@ -430,7 +441,7 @@ static inline void remove_deprecated_bus_links(struct device *dev) { }
*/
int bus_add_device(struct device * dev)
{
- struct bus_type * bus = get_bus(dev->bus);
+ struct bus_type * bus = bus_get(dev->bus);
int error = 0;
if (bus) {
@@ -459,7 +470,7 @@ out_subsys:
out_id:
device_remove_attrs(bus, dev);
out_put:
- put_bus(dev->bus);
+ bus_put(dev->bus);
return error;
}
@@ -509,7 +520,7 @@ void bus_remove_device(struct device * dev)
}
pr_debug("bus %s: remove device %s\n", dev->bus->name, dev->bus_id);
device_release_driver(dev);
- put_bus(dev->bus);
+ bus_put(dev->bus);
}
}
@@ -568,32 +579,29 @@ static void remove_bind_files(struct device_driver *drv)
driver_remove_file(drv, &driver_attr_unbind);
}
+static BUS_ATTR(drivers_probe, S_IWUSR, NULL, store_drivers_probe);
+static BUS_ATTR(drivers_autoprobe, S_IWUSR | S_IRUGO,
+ show_drivers_autoprobe, store_drivers_autoprobe);
+
static int add_probe_files(struct bus_type *bus)
{
int retval;
- bus->drivers_probe_attr.attr.name = "drivers_probe";
- bus->drivers_probe_attr.attr.mode = S_IWUSR;
- bus->drivers_probe_attr.store = store_drivers_probe;
- retval = bus_create_file(bus, &bus->drivers_probe_attr);
+ retval = bus_create_file(bus, &bus_attr_drivers_probe);
if (retval)
goto out;
- bus->drivers_autoprobe_attr.attr.name = "drivers_autoprobe";
- bus->drivers_autoprobe_attr.attr.mode = S_IWUSR | S_IRUGO;
- bus->drivers_autoprobe_attr.show = show_drivers_autoprobe;
- bus->drivers_autoprobe_attr.store = store_drivers_autoprobe;
- retval = bus_create_file(bus, &bus->drivers_autoprobe_attr);
+ retval = bus_create_file(bus, &bus_attr_drivers_autoprobe);
if (retval)
- bus_remove_file(bus, &bus->drivers_probe_attr);
+ bus_remove_file(bus, &bus_attr_drivers_probe);
out:
return retval;
}
static void remove_probe_files(struct bus_type *bus)
{
- bus_remove_file(bus, &bus->drivers_autoprobe_attr);
- bus_remove_file(bus, &bus->drivers_probe_attr);
+ bus_remove_file(bus, &bus_attr_drivers_autoprobe);
+ bus_remove_file(bus, &bus_attr_drivers_probe);
}
#else
static inline int add_bind_files(struct device_driver *drv) { return 0; }
@@ -602,6 +610,17 @@ static inline int add_probe_files(struct bus_type *bus) { return 0; }
static inline void remove_probe_files(struct bus_type *bus) {}
#endif
+static ssize_t driver_uevent_store(struct device_driver *drv,
+ const char *buf, size_t count)
+{
+ enum kobject_action action;
+
+ if (kobject_action_type(buf, count, &action) == 0)
+ kobject_uevent(&drv->kobj, action);
+ return count;
+}
+static DRIVER_ATTR(uevent, S_IWUSR, NULL, driver_uevent_store);
+
/**
* bus_add_driver - Add a driver to the bus.
* @drv: driver.
@@ -609,7 +628,7 @@ static inline void remove_probe_files(struct bus_type *bus) {}
*/
int bus_add_driver(struct device_driver *drv)
{
- struct bus_type * bus = get_bus(drv->bus);
+ struct bus_type * bus = bus_get(drv->bus);
int error = 0;
if (!bus)
@@ -632,6 +651,11 @@ int bus_add_driver(struct device_driver *drv)
klist_add_tail(&drv->knode_bus, &bus->klist_drivers);
module_add_driver(drv->owner, drv);
+ error = driver_create_file(drv, &driver_attr_uevent);
+ if (error) {
+ printk(KERN_ERR "%s: uevent attr (%s) failed\n",
+ __FUNCTION__, drv->name);
+ }
error = driver_add_attrs(bus, drv);
if (error) {
/* How the hell do we get out of this pickle? Give up */
@@ -649,7 +673,7 @@ int bus_add_driver(struct device_driver *drv)
out_unregister:
kobject_unregister(&drv->kobj);
out_put_bus:
- put_bus(bus);
+ bus_put(bus);
return error;
}
@@ -669,12 +693,13 @@ void bus_remove_driver(struct device_driver * drv)
remove_bind_files(drv);
driver_remove_attrs(drv->bus, drv);
+ driver_remove_file(drv, &driver_attr_uevent);
klist_remove(&drv->knode_bus);
pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);
driver_detach(drv);
module_remove_driver(drv);
kobject_unregister(&drv->kobj);
- put_bus(drv->bus);
+ bus_put(drv->bus);
}
@@ -729,18 +754,6 @@ int device_reprobe(struct device *dev)
}
EXPORT_SYMBOL_GPL(device_reprobe);
-struct bus_type *get_bus(struct bus_type *bus)
-{
- return bus ? container_of(subsys_get(&bus->subsys),
- struct bus_type, subsys) : NULL;
-}
-
-void put_bus(struct bus_type * bus)
-{
- subsys_put(&bus->subsys);
-}
-
-
/**
* find_bus - locate bus by name.
* @name: name of bus.
@@ -808,6 +821,17 @@ static void klist_devices_put(struct klist_node *n)
put_device(dev);
}
+static ssize_t bus_uevent_store(struct bus_type *bus,
+ const char *buf, size_t count)
+{
+ enum kobject_action action;
+
+ if (kobject_action_type(buf, count, &action) == 0)
+ kobject_uevent(&bus->subsys.kobj, action);
+ return count;
+}
+static BUS_ATTR(uevent, S_IWUSR, NULL, bus_uevent_store);
+
/**
* bus_register - register a bus with the system.
* @bus: bus.
@@ -826,11 +850,16 @@ int bus_register(struct bus_type * bus)
if (retval)
goto out;
- subsys_set_kset(bus, bus_subsys);
+ bus->subsys.kobj.kset = &bus_subsys;
+
retval = subsystem_register(&bus->subsys);
if (retval)
goto out;
+ retval = bus_create_file(bus, &bus_attr_uevent);
+ if (retval)
+ goto bus_uevent_fail;
+
kobject_set_name(&bus->devices.kobj, "devices");
bus->devices.kobj.parent = &bus->subsys.kobj;
retval = kset_register(&bus->devices);
@@ -839,7 +868,7 @@ int bus_register(struct bus_type * bus)
kobject_set_name(&bus->drivers.kobj, "drivers");
bus->drivers.kobj.parent = &bus->subsys.kobj;
- bus->drivers.ktype = &ktype_driver;
+ bus->drivers.ktype = &driver_ktype;
retval = kset_register(&bus->drivers);
if (retval)
goto bus_drivers_fail;
@@ -866,6 +895,8 @@ bus_probe_files_fail:
bus_drivers_fail:
kset_unregister(&bus->devices);
bus_devices_fail:
+ bus_remove_file(bus, &bus_attr_uevent);
+bus_uevent_fail:
subsystem_unregister(&bus->subsys);
out:
return retval;
@@ -876,7 +907,7 @@ out:
* @bus: bus.
*
* Unregister the child subsystems and the bus itself.
- * Finally, we call put_bus() to release the refcount
+ * Finally, we call bus_put() to release the refcount
*/
void bus_unregister(struct bus_type * bus)
{
@@ -885,6 +916,7 @@ void bus_unregister(struct bus_type * bus)
remove_probe_files(bus);
kset_unregister(&bus->drivers);
kset_unregister(&bus->devices);
+ bus_remove_file(bus, &bus_attr_uevent);
subsystem_unregister(&bus->subsys);
}
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 4d2222618b7..a863bb091e1 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -65,13 +65,13 @@ static struct sysfs_ops class_sysfs_ops = {
.store = class_attr_store,
};
-static struct kobj_type ktype_class = {
+static struct kobj_type class_ktype = {
.sysfs_ops = &class_sysfs_ops,
.release = class_release,
};
/* Hotplug events for classes go to the class_obj subsys */
-static decl_subsys(class, &ktype_class, NULL);
+static decl_subsys(class, &class_ktype, NULL);
int class_create_file(struct class * cls, const struct class_attribute * attr)
@@ -93,14 +93,14 @@ void class_remove_file(struct class * cls, const struct class_attribute * attr)
static struct class *class_get(struct class *cls)
{
if (cls)
- return container_of(subsys_get(&cls->subsys), struct class, subsys);
+ return container_of(kset_get(&cls->subsys), struct class, subsys);
return NULL;
}
static void class_put(struct class * cls)
{
if (cls)
- subsys_put(&cls->subsys);
+ kset_put(&cls->subsys);
}
@@ -149,7 +149,7 @@ int class_register(struct class * cls)
if (error)
return error;
- subsys_set_kset(cls, class_subsys);
+ cls->subsys.kobj.kset = &class_subsys;
error = subsystem_register(&cls->subsys);
if (!error) {
@@ -180,8 +180,7 @@ static void class_device_create_release(struct class_device *class_dev)
/* needed to allow these devices to have parent class devices */
static int class_device_create_uevent(struct class_device *class_dev,
- char **envp, int num_envp,
- char *buffer, int buffer_size)
+ struct kobj_uevent_env *env)
{
pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id);
return 0;
@@ -324,7 +323,7 @@ static void class_dev_release(struct kobject * kobj)
}
}
-static struct kobj_type ktype_class_device = {
+static struct kobj_type class_device_ktype = {
.sysfs_ops = &class_dev_sysfs_ops,
.release = class_dev_release,
};
@@ -333,7 +332,7 @@ static int class_uevent_filter(struct kset *kset, struct kobject *kobj)
{
struct kobj_type *ktype = get_ktype(kobj);
- if (ktype == &ktype_class_device) {
+ if (ktype == &class_device_ktype) {
struct class_device *class_dev = to_class_dev(kobj);
if (class_dev->class)
return 1;
@@ -403,64 +402,43 @@ static void remove_deprecated_class_device_links(struct class_device *cd)
{ }
#endif
-static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp,
- int num_envp, char *buffer, int buffer_size)
+static int class_uevent(struct kset *kset, struct kobject *kobj,
+ struct kobj_uevent_env *env)
{
struct class_device *class_dev = to_class_dev(kobj);
struct device *dev = class_dev->dev;
- int i = 0;
- int length = 0;
int retval = 0;
pr_debug("%s - name = %s\n", __FUNCTION__, class_dev->class_id);
if (MAJOR(class_dev->devt)) {
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "MAJOR=%u", MAJOR(class_dev->devt));
+ add_uevent_var(env, "MAJOR=%u", MAJOR(class_dev->devt));
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "MINOR=%u", MINOR(class_dev->devt));
+ add_uevent_var(env, "MINOR=%u", MINOR(class_dev->devt));
}
if (dev) {
const char *path = kobject_get_path(&dev->kobj, GFP_KERNEL);
if (path) {
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVPATH=%s", path);
+ add_uevent_var(env, "PHYSDEVPATH=%s", path);
kfree(path);
}
if (dev->bus)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVBUS=%s", dev->bus->name);
+ add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name);
if (dev->driver)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVDRIVER=%s", dev->driver->name);
+ add_uevent_var(env, "PHYSDEVDRIVER=%s", dev->driver->name);
}
- /* terminate, set to next free slot, shrink available space */
- envp[i] = NULL;
- envp = &envp[i];
- num_envp -= i;
- buffer = &buffer[length];
- buffer_size -= length;
-
if (class_dev->uevent) {
/* have the class device specific function add its stuff */
- retval = class_dev->uevent(class_dev, envp, num_envp,
- buffer, buffer_size);
+ retval = class_dev->uevent(class_dev, env);
if (retval)
pr_debug("class_dev->uevent() returned %d\n", retval);
} else if (class_dev->class->uevent) {
/* have the class specific function add its stuff */
- retval = class_dev->class->uevent(class_dev, envp, num_envp,
- buffer, buffer_size);
+ retval = class_dev->class->uevent(class_dev, env);
if (retval)
pr_debug("class->uevent() returned %d\n", retval);
}
@@ -474,7 +452,7 @@ static struct kset_uevent_ops class_uevent_ops = {
.uevent = class_uevent,
};
-static decl_subsys(class_obj, &ktype_class_device, &class_uevent_ops);
+static decl_subsys(class_obj, &class_device_ktype, &class_uevent_ops);
static int class_device_add_attrs(struct class_device * cd)
@@ -883,7 +861,7 @@ int __init classes_init(void)
/* ick, this is ugly, the things we go through to keep from showing up
* in sysfs... */
- subsystem_init(&class_obj_subsys);
+ kset_init(&class_obj_subsys);
if (!class_obj_subsys.kobj.parent)
class_obj_subsys.kobj.parent = &class_obj_subsys.kobj;
return 0;
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 0455aa78fa1..c1343414d28 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -108,7 +108,7 @@ static void device_release(struct kobject * kobj)
}
}
-static struct kobj_type ktype_device = {
+static struct kobj_type device_ktype = {
.release = device_release,
.sysfs_ops = &dev_sysfs_ops,
};
@@ -118,7 +118,7 @@ static int dev_uevent_filter(struct kset *kset, struct kobject *kobj)
{
struct kobj_type *ktype = get_ktype(kobj);
- if (ktype == &ktype_device) {
+ if (ktype == &device_ktype) {
struct device *dev = to_dev(kobj);
if (dev->uevent_suppress)
return 0;
@@ -141,33 +141,23 @@ static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj)
return NULL;
}
-static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
- int num_envp, char *buffer, int buffer_size)
+static int dev_uevent(struct kset *kset, struct kobject *kobj,
+ struct kobj_uevent_env *env)
{
struct device *dev = to_dev(kobj);
- int i = 0;
- int length = 0;
int retval = 0;
/* add the major/minor if present */
if (MAJOR(dev->devt)) {
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "MAJOR=%u", MAJOR(dev->devt));
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "MINOR=%u", MINOR(dev->devt));
+ add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt));
+ add_uevent_var(env, "MINOR=%u", MINOR(dev->devt));
}
if (dev->type && dev->type->name)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "DEVTYPE=%s", dev->type->name);
+ add_uevent_var(env, "DEVTYPE=%s", dev->type->name);
if (dev->driver)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "DRIVER=%s", dev->driver->name);
+ add_uevent_var(env, "DRIVER=%s", dev->driver->name);
#ifdef CONFIG_SYSFS_DEPRECATED
if (dev->class) {
@@ -181,59 +171,43 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
path = kobject_get_path(&parent->kobj, GFP_KERNEL);
if (path) {
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVPATH=%s", path);
+ add_uevent_var(env, "PHYSDEVPATH=%s", path);
kfree(path);
}
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVBUS=%s", parent->bus->name);
+ add_uevent_var(env, "PHYSDEVBUS=%s", parent->bus->name);
if (parent->driver)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVDRIVER=%s", parent->driver->name);
+ add_uevent_var(env, "PHYSDEVDRIVER=%s",
+ parent->driver->name);
}
} else if (dev->bus) {
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVBUS=%s", dev->bus->name);
+ add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name);
if (dev->driver)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVDRIVER=%s", dev->driver->name);
+ add_uevent_var(env, "PHYSDEVDRIVER=%s", dev->driver->name);
}
#endif
- /* terminate, set to next free slot, shrink available space */
- envp[i] = NULL;
- envp = &envp[i];
- num_envp -= i;
- buffer = &buffer[length];
- buffer_size -= length;
-
+ /* have the bus specific function add its stuff */
if (dev->bus && dev->bus->uevent) {
- /* have the bus specific function add its stuff */
- retval = dev->bus->uevent(dev, envp, num_envp, buffer, buffer_size);
+ retval = dev->bus->uevent(dev, env);
if (retval)
pr_debug ("%s: bus uevent() returned %d\n",
__FUNCTION__, retval);
}
+ /* have the class specific function add its stuff */
if (dev->class && dev->class->dev_uevent) {
- /* have the class specific function add its stuff */
- retval = dev->class->dev_uevent(dev, envp, num_envp, buffer, buffer_size);
+ retval = dev->class->dev_uevent(dev, env);
if (retval)
pr_debug("%s: class uevent() returned %d\n",
__FUNCTION__, retval);
}
+ /* have the device type specific fuction add its stuff */
if (dev->type && dev->type->uevent) {
- /* have the device type specific fuction add its stuff */
- retval = dev->type->uevent(dev, envp, num_envp, buffer, buffer_size);
+ retval = dev->type->uevent(dev, env);
if (retval)
pr_debug("%s: dev_type uevent() returned %d\n",
__FUNCTION__, retval);
@@ -253,22 +227,18 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr,
{
struct kobject *top_kobj;
struct kset *kset;
- char *envp[32];
- char *data = NULL;
- char *pos;
+ struct kobj_uevent_env *env = NULL;
int i;
size_t count = 0;
int retval;
/* search the kset, the device belongs to */
top_kobj = &dev->kobj;
- if (!top_kobj->kset && top_kobj->parent) {
- do {
- top_kobj = top_kobj->parent;
- } while (!top_kobj->kset && top_kobj->parent);
- }
+ while (!top_kobj->kset && top_kobj->parent)
+ top_kobj = top_kobj->parent;
if (!top_kobj->kset)
goto out;
+
kset = top_kobj->kset;
if (!kset->uevent_ops || !kset->uevent_ops->uevent)
goto out;
@@ -278,35 +248,37 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr,
if (!kset->uevent_ops->filter(kset, &dev->kobj))
goto out;
- data = (char *)get_zeroed_page(GFP_KERNEL);
- if (!data)
+ env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL);
+ if (!env)
return -ENOMEM;
/* let the kset specific function add its keys */
- pos = data;
- retval = kset->uevent_ops->uevent(kset, &dev->kobj,
- envp, ARRAY_SIZE(envp),
- pos, PAGE_SIZE);
+ retval = kset->uevent_ops->uevent(kset, &dev->kobj, env);
if (retval)
goto out;
/* copy keys to file */
- for (i = 0; envp[i]; i++) {
- pos = &buf[count];
- count += sprintf(pos, "%s\n", envp[i]);
- }
+ for (i = 0; i < env->envp_idx; i++)
+ count += sprintf(&buf[count], "%s\n", env->envp[i]);
out:
- free_page((unsigned long)data);
+ kfree(env);
return count;
}
static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- if (memcmp(buf, "add", 3) != 0)
- dev_err(dev, "uevent: unsupported action-string; this will "
- "be ignored in a future kernel version");
+ enum kobject_action action;
+
+ if (kobject_action_type(buf, count, &action) == 0) {
+ kobject_uevent(&dev->kobj, action);
+ goto out;
+ }
+
+ dev_err(dev, "uevent: unsupported action-string; this will "
+ "be ignored in a future kernel version\n");
kobject_uevent(&dev->kobj, KOBJ_ADD);
+out:
return count;
}
@@ -433,7 +405,7 @@ static struct device_attribute devt_attr =
* devices_subsys - structure to be registered with kobject core.
*/
-decl_subsys(devices, &ktype_device, &device_uevent_ops);
+decl_subsys(devices, &device_ktype, &device_uevent_ops);
/**
@@ -570,9 +542,13 @@ void device_initialize(struct device *dev)
static struct kobject * get_device_parent(struct device *dev,
struct device *parent)
{
- /* Set the parent to the class, not the parent device */
- /* this keeps sysfs from having a symlink to make old udevs happy */
- if (dev->class)
+ /*
+ * Set the parent to the class, not the parent device
+ * for topmost devices in class hierarchy.
+ * This keeps sysfs from having a symlink to make old
+ * udevs happy
+ */
+ if (dev->class && (!parent || parent->class != dev->class))
return &dev->class->subsys.kobj;
else if (parent)
return &parent->kobj;
@@ -643,6 +619,98 @@ static int setup_parent(struct device *dev, struct device *parent)
return 0;
}
+static int device_add_class_symlinks(struct device *dev)
+{
+ int error;
+
+ if (!dev->class)
+ return 0;
+ error = sysfs_create_link(&dev->kobj, &dev->class->subsys.kobj,
+ "subsystem");
+ if (error)
+ goto out;
+ /*
+ * If this is not a "fake" compatible device, then create the
+ * symlink from the class to the device.
+ */
+ if (dev->kobj.parent != &dev->class->subsys.kobj) {
+ error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
+ dev->bus_id);
+ if (error)
+ goto out_subsys;
+ }
+ if (dev->parent) {
+#ifdef CONFIG_SYSFS_DEPRECATED
+ {
+ struct device *parent = dev->parent;
+ char *class_name;
+
+ /*
+ * In old sysfs stacked class devices had 'device'
+ * link pointing to real device instead of parent
+ */
+ while (parent->class && !parent->bus && parent->parent)
+ parent = parent->parent;
+
+ error = sysfs_create_link(&dev->kobj,
+ &parent->kobj,
+ "device");
+ if (error)
+ goto out_busid;
+
+ class_name = make_class_name(dev->class->name,
+ &dev->kobj);
+ if (class_name)
+ error = sysfs_create_link(&dev->parent->kobj,
+ &dev->kobj, class_name);
+ kfree(class_name);
+ if (error)
+ goto out_device;
+ }
+#else
+ error = sysfs_create_link(&dev->kobj, &dev->parent->kobj,
+ "device");
+ if (error)
+ goto out_busid;
+#endif
+ }
+ return 0;
+
+#ifdef CONFIG_SYSFS_DEPRECATED
+out_device:
+ if (dev->parent)
+ sysfs_remove_link(&dev->kobj, "device");
+#endif
+out_busid:
+ if (dev->kobj.parent != &dev->class->subsys.kobj)
+ sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
+out_subsys:
+ sysfs_remove_link(&dev->kobj, "subsystem");
+out:
+ return error;
+}
+
+static void device_remove_class_symlinks(struct device *dev)
+{
+ if (!dev->class)
+ return;
+ if (dev->parent) {
+#ifdef CONFIG_SYSFS_DEPRECATED
+ char *class_name;
+
+ class_name = make_class_name(dev->class->name, &dev->kobj);
+ if (class_name) {
+ sysfs_remove_link(&dev->parent->kobj, class_name);
+ kfree(class_name);
+ }
+#endif
+ sysfs_remove_link(&dev->kobj, "device");
+ }
+ if (dev->kobj.parent != &dev->class->subsys.kobj)
+ sysfs_remove_link(&dev->class->subsys.kobj, dev->bus_id);
+ sysfs_remove_link(&dev->kobj, "subsystem");
+}
+
/**
* device_add - add device to device hierarchy.
* @dev: device.
@@ -657,7 +725,6 @@ static int setup_parent(struct device *dev, struct device *parent)
int device_add(struct device *dev)
{
struct device *parent = NULL;
- char *class_name = NULL;
struct class_interface *class_intf;
int error = -EINVAL;
@@ -697,27 +764,9 @@ int device_add(struct device *dev)
goto ueventattrError;
}
- if (dev->class) {
- sysfs_create_link(&dev->kobj, &dev->class->subsys.kobj,
- "subsystem");
- /* If this is not a "fake" compatible device, then create the
- * symlink from the class to the device. */
- if (dev->kobj.parent != &dev->class->subsys.kobj)
- sysfs_create_link(&dev->class->subsys.kobj,
- &dev->kobj, dev->bus_id);
- if (parent) {
- sysfs_create_link(&dev->kobj, &dev->parent->kobj,
- "device");
-#ifdef CONFIG_SYSFS_DEPRECATED
- class_name = make_class_name(dev->class->name,
- &dev->kobj);
- if (class_name)
- sysfs_create_link(&dev->parent->kobj,
- &dev->kobj, class_name);
-#endif
- }
- }
-
+ error = device_add_class_symlinks(dev);
+ if (error)
+ goto SymlinkError;
error = device_add_attrs(dev);
if (error)
goto AttrsError;
@@ -744,7 +793,6 @@ int device_add(struct device *dev)
up(&dev->class->sem);
}
Done:
- kfree(class_name);
put_device(dev);
return error;
BusError:
@@ -755,6 +803,8 @@ int device_add(struct device *dev)
BUS_NOTIFY_DEL_DEVICE, dev);
device_remove_attrs(dev);
AttrsError:
+ device_remove_class_symlinks(dev);
+ SymlinkError:
if (MAJOR(dev->devt))
device_remove_file(dev, &devt_attr);
@@ -1139,7 +1189,7 @@ int device_rename(struct device *dev, char *new_name)
{
char *old_class_name = NULL;
char *new_class_name = NULL;
- char *old_symlink_name = NULL;
+ char *old_device_name = NULL;
int error;
dev = get_device(dev);
@@ -1153,42 +1203,49 @@ int device_rename(struct device *dev, char *new_name)
old_class_name = make_class_name(dev->class->name, &dev->kobj);
#endif
- if (dev->class) {
- old_symlink_name = kmalloc(BUS_ID_SIZE, GFP_KERNEL);
- if (!old_symlink_name) {
- error = -ENOMEM;
- goto out_free_old_class;
- }
- strlcpy(old_symlink_name, dev->bus_id, BUS_ID_SIZE);
+ old_device_name = kmalloc(BUS_ID_SIZE, GFP_KERNEL);
+ if (!old_device_name) {
+ error = -ENOMEM;
+ goto out;
}
-
+ strlcpy(old_device_name, dev->bus_id, BUS_ID_SIZE);
strlcpy(dev->bus_id, new_name, BUS_ID_SIZE);
error = kobject_rename(&dev->kobj, new_name);
+ if (error) {
+ strlcpy(dev->bus_id, old_device_name, BUS_ID_SIZE);
+ goto out;
+ }
#ifdef CONFIG_SYSFS_DEPRECATED
if (old_class_name) {
new_class_name = make_class_name(dev->class->name, &dev->kobj);
if (new_class_name) {
- sysfs_create_link(&dev->parent->kobj, &dev->kobj,
- new_class_name);
+ error = sysfs_create_link(&dev->parent->kobj,
+ &dev->kobj, new_class_name);
+ if (error)
+ goto out;
sysfs_remove_link(&dev->parent->kobj, old_class_name);
}
}
#endif
if (dev->class) {
- sysfs_remove_link(&dev->class->subsys.kobj,
- old_symlink_name);
- sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
- dev->bus_id);
+ sysfs_remove_link(&dev->class->subsys.kobj, old_device_name);
+ error = sysfs_create_link(&dev->class->subsys.kobj, &dev->kobj,
+ dev->bus_id);
+ if (error) {
+ /* Uh... how to unravel this if restoring can fail? */
+ dev_err(dev, "%s: sysfs_create_symlink failed (%d)\n",
+ __FUNCTION__, error);
+ }
}
+out:
put_device(dev);
kfree(new_class_name);
- kfree(old_symlink_name);
- out_free_old_class:
kfree(old_class_name);
+ kfree(old_device_name);
return error;
}
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index fe7ef339414..40545071e3c 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -53,7 +53,7 @@ static ssize_t store_online(struct sys_device *dev, const char *buf,
ret = count;
return ret;
}
-static SYSDEV_ATTR(online, 0600, show_online, store_online);
+static SYSDEV_ATTR(online, 0644, show_online, store_online);
static void __devinit register_cpu_control(struct cpu *cpu)
{
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 53f0ee6f301..0295855a3ee 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -88,19 +88,14 @@ static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store);
static void fw_dev_release(struct device *dev);
-static int firmware_uevent(struct device *dev, char **envp, int num_envp,
- char *buffer, int buffer_size)
+static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct firmware_priv *fw_priv = dev_get_drvdata(dev);
- int i = 0, len = 0;
- if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
- "FIRMWARE=%s", fw_priv->fw_id))
+ if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id))
return -ENOMEM;
- if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
- "TIMEOUT=%i", loading_timeout))
+ if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout))
return -ENOMEM;
- envp[i] = NULL;
return 0;
}
@@ -232,6 +227,7 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
/**
* firmware_data_write - write method for firmware
* @kobj: kobject for the device
+ * @bin_attr: bin_attr structure
* @buffer: buffer being written
* @offset: buffer offset for write in total data store area
* @count: buffer size
@@ -296,8 +292,7 @@ firmware_class_timeout(u_long data)
static inline void fw_setup_device_id(struct device *f_dev, struct device *dev)
{
- /* XXX warning we should watch out for name collisions */
- strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE);
+ snprintf(f_dev->bus_id, BUS_ID_SIZE, "firmware-%s", dev->bus_id);
}
static int fw_register_device(struct device **dev_p, const char *fw_name,
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 74b96795d2f..cb99daeae93 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -34,8 +34,7 @@ static const char *memory_uevent_name(struct kset *kset, struct kobject *kobj)
return MEMORY_CLASS_NAME;
}
-static int memory_uevent(struct kset *kset, struct kobject *kobj, char **envp,
- int num_envp, char *buffer, int buffer_size)
+static int memory_uevent(struct kset *kset, struct kobj_uevent_env *env)
{
int retval = 0;
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 869ff8c0014..fb560924148 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -160,13 +160,8 @@ static void platform_device_release(struct device *dev)
*
* Create a platform device object which can have other objects attached
* to it, and which will have attached objects freed when it is released.
- *
- * This device will be marked as not supporting hotpluggable drivers; no
- * device add/remove uevents will be generated. In the unusual case that
- * the device isn't being dynamically allocated as a legacy "probe the
- * hardware" driver, infrastructure code should reverse this marking.
*/
-struct platform_device *platform_device_alloc(const char *name, unsigned int id)
+struct platform_device *platform_device_alloc(const char *name, int id)
{
struct platform_object *pa;
@@ -177,12 +172,6 @@ struct platform_device *platform_device_alloc(const char *name, unsigned int id)
pa->pdev.id = id;
device_initialize(&pa->pdev.dev);
pa->pdev.dev.release = platform_device_release;
-
- /* prevent hotplug "modprobe $(MODALIAS)" from causing trouble in
- * legacy probe-the-hardware drivers, which don't properly split
- * out device enumeration logic from drivers.
- */
- pa->pdev.dev.uevent_suppress = 1;
}
return pa ? &pa->pdev : NULL;
@@ -256,7 +245,8 @@ int platform_device_add(struct platform_device *pdev)
pdev->dev.bus = &platform_bus_type;
if (pdev->id != -1)
- snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%u", pdev->name, pdev->id);
+ snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%d", pdev->name,
+ pdev->id);
else
strlcpy(pdev->dev.bus_id, pdev->name, BUS_ID_SIZE);
@@ -370,7 +360,7 @@ EXPORT_SYMBOL_GPL(platform_device_unregister);
* the Linux driver model. In particular, when such drivers are built
* as modules, they can't be "hotplugged".
*/
-struct platform_device *platform_device_register_simple(char *name, unsigned int id,
+struct platform_device *platform_device_register_simple(char *name, int id,
struct resource *res, unsigned int num)
{
struct platform_device *pdev;
@@ -530,7 +520,7 @@ static ssize_t
modalias_show(struct device *dev, struct device_attribute *a, char *buf)
{
struct platform_device *pdev = to_platform_device(dev);
- int len = snprintf(buf, PAGE_SIZE, "%s\n", pdev->name);
+ int len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name);
return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
}
@@ -540,13 +530,11 @@ static struct device_attribute platform_dev_attrs[] = {
__ATTR_NULL,
};
-static int platform_uevent(struct device *dev, char **envp, int num_envp,
- char *buffer, int buffer_size)
+static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct platform_device *pdev = to_platform_device(dev);
- envp[0] = buffer;
- snprintf(buffer, buffer_size, "MODALIAS=%s", pdev->name);
+ add_uevent_var(env, "MODALIAS=platform:%s", pdev->name);
return 0;
}
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index 91f230939c1..a803733c839 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -1,10 +1,10 @@
obj-y := shutdown.o
-obj-$(CONFIG_PM) += main.o suspend.o resume.o runtime.o sysfs.o
+obj-$(CONFIG_PM_SLEEP) += main.o sysfs.o
obj-$(CONFIG_PM_TRACE) += trace.o
ifeq ($(CONFIG_DEBUG_DRIVER),y)
EXTRA_CFLAGS += -DDEBUG
endif
-ifeq ($(CONFIG_PM_DEBUG),y)
+ifeq ($(CONFIG_PM_VERBOSE),y)
EXTRA_CFLAGS += -DDEBUG
endif
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index eb9f38d0aa5..0ab4ab21f56 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -20,19 +20,24 @@
*/
#include <linux/device.h>
+#include <linux/kallsyms.h>
#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/resume-trace.h>
+#include "../base.h"
#include "power.h"
LIST_HEAD(dpm_active);
-LIST_HEAD(dpm_off);
-LIST_HEAD(dpm_off_irq);
+static LIST_HEAD(dpm_off);
+static LIST_HEAD(dpm_off_irq);
-DEFINE_MUTEX(dpm_mtx);
-DEFINE_MUTEX(dpm_list_mtx);
+static DEFINE_MUTEX(dpm_mtx);
+static DEFINE_MUTEX(dpm_list_mtx);
int (*platform_enable_wakeup)(struct device *dev, int is_on);
+
int device_pm_add(struct device *dev)
{
int error;
@@ -61,3 +66,334 @@ void device_pm_remove(struct device *dev)
}
+/*------------------------- Resume routines -------------------------*/
+
+/**
+ * resume_device - Restore state for one device.
+ * @dev: Device.
+ *
+ */
+
+static int resume_device(struct device * dev)
+{
+ int error = 0;
+
+ TRACE_DEVICE(dev);
+ TRACE_RESUME(0);
+
+ down(&dev->sem);
+
+ if (dev->bus && dev->bus->resume) {
+ dev_dbg(dev,"resuming\n");
+ error = dev->bus->resume(dev);
+ }
+
+ if (!error && dev->type && dev->type->resume) {
+ dev_dbg(dev,"resuming\n");
+ error = dev->type->resume(dev);
+ }
+
+ if (!error && dev->class && dev->class->resume) {
+ dev_dbg(dev,"class resume\n");
+ error = dev->class->resume(dev);
+ }
+
+ up(&dev->sem);
+
+ TRACE_RESUME(error);
+ return error;
+}
+
+
+static int resume_device_early(struct device * dev)
+{
+ int error = 0;
+
+ TRACE_DEVICE(dev);
+ TRACE_RESUME(0);
+ if (dev->bus && dev->bus->resume_early) {
+ dev_dbg(dev,"EARLY resume\n");
+ error = dev->bus->resume_early(dev);
+ }
+ TRACE_RESUME(error);
+ return error;
+}
+
+/*
+ * Resume the devices that have either not gone through
+ * the late suspend, or that did go through it but also
+ * went through the early resume
+ */
+static void dpm_resume(void)
+{
+ mutex_lock(&dpm_list_mtx);
+ while(!list_empty(&dpm_off)) {
+ struct list_head * entry = dpm_off.next;
+ struct device * dev = to_device(entry);
+
+ get_device(dev);
+ list_move_tail(entry, &dpm_active);
+
+ mutex_unlock(&dpm_list_mtx);
+ resume_device(dev);
+ mutex_lock(&dpm_list_mtx);
+ put_device(dev);
+ }
+ mutex_unlock(&dpm_list_mtx);
+}
+
+
+/**
+ * device_resume - Restore state of each device in system.
+ *
+ * Walk the dpm_off list, remove each entry, resume the device,
+ * then add it to the dpm_active list.
+ */
+
+void device_resume(void)
+{
+ might_sleep();
+ mutex_lock(&dpm_mtx);
+ dpm_resume();
+ mutex_unlock(&dpm_mtx);
+}
+
+EXPORT_SYMBOL_GPL(device_resume);
+
+
+/**
+ * dpm_power_up - Power on some devices.
+ *
+ * Walk the dpm_off_irq list and power each device up. This
+ * is used for devices that required they be powered down with
+ * interrupts disabled. As devices are powered on, they are moved
+ * to the dpm_active list.
+ *
+ * Interrupts must be disabled when calling this.
+ */
+
+static void dpm_power_up(void)
+{
+ while(!list_empty(&dpm_off_irq)) {
+ struct list_head * entry = dpm_off_irq.next;
+ struct device * dev = to_device(entry);
+
+ list_move_tail(entry, &dpm_off);
+ resume_device_early(dev);
+ }
+}
+
+
+/**
+ * device_power_up - Turn on all devices that need special attention.
+ *
+ * Power on system devices then devices that required we shut them down
+ * with interrupts disabled.
+ * Called with interrupts disabled.
+ */
+
+void device_power_up(void)
+{
+ sysdev_resume();
+ dpm_power_up();
+}
+
+EXPORT_SYMBOL_GPL(device_power_up);
+
+
+/*------------------------- Suspend routines -------------------------*/
+
+/*
+ * The entries in the dpm_active list are in a depth first order, simply
+ * because children are guaranteed to be discovered after parents, and
+ * are inserted at the back of the list on discovery.
+ *
+ * All list on the suspend path are done in reverse order, so we operate
+ * on the leaves of the device tree (or forests, depending on how you want
+ * to look at it ;) first. As nodes are removed from the back of the list,
+ * they are inserted into the front of their destintation lists.
+ *
+ * Things are the reverse on the resume path - iterations are done in
+ * forward order, and nodes are inserted at the back of their destination
+ * lists. This way, the ancestors will be accessed before their descendents.
+ */
+
+static inline char *suspend_verb(u32 event)
+{
+ switch (event) {
+ case PM_EVENT_SUSPEND: return "suspend";
+ case PM_EVENT_FREEZE: return "freeze";
+ case PM_EVENT_PRETHAW: return "prethaw";
+ default: return "(unknown suspend event)";
+ }
+}
+
+
+static void
+suspend_device_dbg(struct device *dev, pm_message_t state, char *info)
+{
+ dev_dbg(dev, "%s%s%s\n", info, suspend_verb(state.event),
+ ((state.event == PM_EVENT_SUSPEND) && device_may_wakeup(dev)) ?
+ ", may wakeup" : "");
+}
+
+/**
+ * suspend_device - Save state of one device.
+ * @dev: Device.
+ * @state: Power state device is entering.
+ */
+
+static int suspend_device(struct device * dev, pm_message_t state)
+{
+ int error = 0;
+
+ down(&dev->sem);
+ if (dev->power.power_state.event) {
+ dev_dbg(dev, "PM: suspend %d-->%d\n",
+ dev->power.power_state.event, state.event);
+ }
+
+ if (dev->class && dev->class->suspend) {
+ suspend_device_dbg(dev, state, "class ");
+ error = dev->class->suspend(dev, state);
+ suspend_report_result(dev->class->suspend, error);
+ }
+
+ if (!error && dev->type && dev->type->suspend) {
+ suspend_device_dbg(dev, state, "type ");
+ error = dev->type->suspend(dev, state);
+ suspend_report_result(dev->type->suspend, error);
+ }
+
+ if (!error && dev->bus && dev->bus->suspend) {
+ suspend_device_dbg(dev, state, "");
+ error = dev->bus->suspend(dev, state);
+ suspend_report_result(dev->bus->suspend, error);
+ }
+ up(&dev->sem);
+ return error;
+}
+
+
+/*
+ * This is called with interrupts off, only a single CPU
+ * running. We can't acquire a mutex or semaphore (and we don't
+ * need the protection)
+ */
+static int suspend_device_late(struct device *dev, pm_message_t state)
+{
+ int error = 0;
+
+ if (dev->bus && dev->bus->suspend_late) {
+ suspend_device_dbg(dev, state, "LATE ");
+ error = dev->bus->suspend_late(dev, state);
+ suspend_report_result(dev->bus->suspend_late, error);
+ }
+ return error;
+}
+
+/**
+ * device_suspend - Save state and stop all devices in system.
+ * @state: Power state to put each device in.
+ *
+ * Walk the dpm_active list, call ->suspend() for each device, and move
+ * it to the dpm_off list.
+ *
+ * (For historical reasons, if it returns -EAGAIN, that used to mean
+ * that the device would be called again with interrupts disabled.
+ * These days, we use the "suspend_late()" callback for that, so we
+ * print a warning and consider it an error).
+ *
+ * If we get a different error, try and back out.
+ *
+ * If we hit a failure with any of the devices, call device_resume()
+ * above to bring the suspended devices back to life.
+ *
+ */
+
+int device_suspend(pm_message_t state)
+{
+ int error = 0;
+
+ might_sleep();
+ mutex_lock(&dpm_mtx);
+ mutex_lock(&dpm_list_mtx);
+ while (!list_empty(&dpm_active) && error == 0) {
+ struct list_head * entry = dpm_active.prev;
+ struct device * dev = to_device(entry);
+
+ get_device(dev);
+ mutex_unlock(&dpm_list_mtx);
+
+ error = suspend_device(dev, state);
+
+ mutex_lock(&dpm_list_mtx);
+
+ /* Check if the device got removed */
+ if (!list_empty(&dev->power.entry)) {
+ /* Move it to the dpm_off list */
+ if (!error)
+ list_move(&dev->power.entry, &dpm_off);
+ }
+ if (error)
+ printk(KERN_ERR "Could not suspend device %s: "
+ "error %d%s\n",
+ kobject_name(&dev->kobj), error,
+ error == -EAGAIN ? " (please convert to suspend_late)" : "");
+ put_device(dev);
+ }
+ mutex_unlock(&dpm_list_mtx);
+ if (error)
+ dpm_resume();
+
+ mutex_unlock(&dpm_mtx);
+ return error;
+}
+
+EXPORT_SYMBOL_GPL(device_suspend);
+
+/**
+ * device_power_down - Shut down special devices.
+ * @state: Power state to enter.
+ *
+ * Walk the dpm_off_irq list, calling ->power_down() for each device that
+ * couldn't power down the device with interrupts enabled. When we're
+ * done, power down system devices.
+ */
+
+int device_power_down(pm_message_t state)
+{
+ int error = 0;
+ struct device * dev;
+
+ while (!list_empty(&dpm_off)) {
+ struct list_head * entry = dpm_off.prev;
+
+ dev = to_device(entry);
+ error = suspend_device_late(dev, state);
+ if (error)
+ goto Error;
+ list_move(&dev->power.entry, &dpm_off_irq);
+ }
+
+ error = sysdev_suspend(state);
+ Done:
+ return error;
+ Error:
+ printk(KERN_ERR "Could not power down device %s: "
+ "error %d\n", kobject_name(&dev->kobj), error);
+ dpm_power_up();
+ goto Done;
+}
+
+EXPORT_SYMBOL_GPL(device_power_down);
+
+void __suspend_report_result(const char *function, void *fn, int ret)
+{
+ if (ret) {
+ printk(KERN_ERR "%s(): ", function);
+ print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn);
+ printk("%d\n", ret);
+ }
+}
+EXPORT_SYMBOL_GPL(__suspend_report_result);
diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h
index 2760f25b3ac..5c4efd493fa 100644
--- a/drivers/base/power/power.h
+++ b/drivers/base/power/power.h
@@ -5,38 +5,17 @@
extern void device_shutdown(void);
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
/*
* main.c
*/
-/*
- * Used to synchronize global power management operations.
- */
-extern struct mutex dpm_mtx;
-
-/*
- * Used to serialize changes to the dpm_* lists.
- */
-extern struct mutex dpm_list_mtx;
-
-/*
- * The PM lists.
- */
-extern struct list_head dpm_active;
-extern struct list_head dpm_off;
-extern struct list_head dpm_off_irq;
-
-
-static inline struct dev_pm_info * to_pm_info(struct list_head * entry)
-{
- return container_of(entry, struct dev_pm_info, entry);
-}
+extern struct list_head dpm_active; /* The active device list */
static inline struct device * to_device(struct list_head * entry)
{
- return container_of(to_pm_info(entry), struct device, power);
+ return container_of(entry, struct device, power.entry);
}
extern int device_pm_add(struct device *);
@@ -49,25 +28,7 @@ extern void device_pm_remove(struct device *);
extern int dpm_sysfs_add(struct device *);
extern void dpm_sysfs_remove(struct device *);
-/*
- * resume.c
- */
-
-extern void dpm_resume(void);
-extern void dpm_power_up(void);
-extern int resume_device(struct device *);
-
-/*
- * suspend.c
- */
-extern int suspend_device(struct device *, pm_message_t);
-
-
-/*
- * runtime.c
- */
-
-#else /* CONFIG_PM */
+#else /* CONFIG_PM_SLEEP */
static inline int device_pm_add(struct device * dev)
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
deleted file mode 100644
index 00fd84ae6e6..00000000000
--- a/drivers/base/power/resume.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * resume.c - Functions for waking devices up.
- *
- * Copyright (c) 2003 Patrick Mochel
- * Copyright (c) 2003 Open Source Development Labs
- *
- * This file is released under the GPLv2
- *
- */
-
-#include <linux/device.h>
-#include <linux/resume-trace.h>
-#include "../base.h"
-#include "power.h"
-
-
-/**
- * resume_device - Restore state for one device.
- * @dev: Device.
- *
- */
-
-int resume_device(struct device * dev)
-{
- int error = 0;
-
- TRACE_DEVICE(dev);
- TRACE_RESUME(0);
-
- down(&dev->sem);
-
- if (dev->bus && dev->bus->resume) {
- dev_dbg(dev,"resuming\n");
- error = dev->bus->resume(dev);
- }
-
- if (!error && dev->type && dev->type->resume) {
- dev_dbg(dev,"resuming\n");
- error = dev->type->resume(dev);
- }
-
- if (!error && dev->class && dev->class->resume) {
- dev_dbg(dev,"class resume\n");
- error = dev->class->resume(dev);
- }
-
- up(&dev->sem);
-
- TRACE_RESUME(error);
- return error;
-}
-
-
-static int resume_device_early(struct device * dev)
-{
- int error = 0;
-
- TRACE_DEVICE(dev);
- TRACE_RESUME(0);
- if (dev->bus && dev->bus->resume_early) {
- dev_dbg(dev,"EARLY resume\n");
- error = dev->bus->resume_early(dev);
- }
- TRACE_RESUME(error);
- return error;
-}
-
-/*
- * Resume the devices that have either not gone through
- * the late suspend, or that did go through it but also
- * went through the early resume
- */
-void dpm_resume(void)
-{
- mutex_lock(&dpm_list_mtx);
- while(!list_empty(&dpm_off)) {
- struct list_head * entry = dpm_off.next;
- struct device * dev = to_device(entry);
-
- get_device(dev);
- list_move_tail(entry, &dpm_active);
-
- mutex_unlock(&dpm_list_mtx);
- resume_device(dev);
- mutex_lock(&dpm_list_mtx);
- put_device(dev);
- }
- mutex_unlock(&dpm_list_mtx);
-}
-
-
-/**
- * device_resume - Restore state of each device in system.
- *
- * Walk the dpm_off list, remove each entry, resume the device,
- * then add it to the dpm_active list.
- */
-
-void device_resume(void)
-{
- might_sleep();
- mutex_lock(&dpm_mtx);
- dpm_resume();
- mutex_unlock(&dpm_mtx);
-}
-
-EXPORT_SYMBOL_GPL(device_resume);
-
-
-/**
- * dpm_power_up - Power on some devices.
- *
- * Walk the dpm_off_irq list and power each device up. This
- * is used for devices that required they be powered down with
- * interrupts disabled. As devices are powered on, they are moved
- * to the dpm_active list.
- *
- * Interrupts must be disabled when calling this.
- */
-
-void dpm_power_up(void)
-{
- while(!list_empty(&dpm_off_irq)) {
- struct list_head * entry = dpm_off_irq.next;
- struct device * dev = to_device(entry);
-
- list_move_tail(entry, &dpm_off);
- resume_device_early(dev);
- }
-}
-
-
-/**
- * device_power_up - Turn on all devices that need special attention.
- *
- * Power on system devices then devices that required we shut them down
- * with interrupts disabled.
- * Called with interrupts disabled.
- */
-
-void device_power_up(void)
-{
- sysdev_resume();
- dpm_power_up();
-}
-
-EXPORT_SYMBOL_GPL(device_power_up);
-
-
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
deleted file mode 100644
index df6174d8586..00000000000
--- a/drivers/base/power/runtime.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * drivers/base/power/runtime.c - Handling dynamic device power management.
- *
- * Copyright (c) 2003 Patrick Mochel
- * Copyright (c) 2003 Open Source Development Lab
- *
- */
-
-#include <linux/device.h>
-#include "power.h"
-
-
-static void runtime_resume(struct device * dev)
-{
- dev_dbg(dev, "resuming\n");
- if (!dev->power.power_state.event)
- return;
- if (!resume_device(dev))
- dev->power.power_state = PMSG_ON;
-}
-
-
-/**
- * dpm_runtime_resume - Power one device back on.
- * @dev: Device.
- *
- * Bring one device back to the on state by first powering it
- * on, then restoring state. We only operate on devices that aren't
- * already on.
- * FIXME: We need to handle devices that are in an unknown state.
- */
-
-void dpm_runtime_resume(struct device * dev)
-{
- mutex_lock(&dpm_mtx);
- runtime_resume(dev);
- mutex_unlock(&dpm_mtx);
-}
-EXPORT_SYMBOL(dpm_runtime_resume);
-
-
-/**
- * dpm_runtime_suspend - Put one device in low-power state.
- * @dev: Device.
- * @state: State to enter.
- */
-
-int dpm_runtime_suspend(struct device * dev, pm_message_t state)
-{
- int error = 0;
-
- mutex_lock(&dpm_mtx);
- if (dev->power.power_state.event == state.event)
- goto Done;
-
- if (dev->power.power_state.event)
- runtime_resume(dev);
-
- if (!(error = suspend_device(dev, state)))
- dev->power.power_state = state;
- Done:
- mutex_unlock(&dpm_mtx);
- return error;
-}
-EXPORT_SYMBOL(dpm_runtime_suspend);
-
-
-#if 0
-/**
- * dpm_set_power_state - Update power_state field.
- * @dev: Device.
- * @state: Power state device is in.
- *
- * This is an update mechanism for drivers to notify the core
- * what power state a device is in. Device probing code may not
- * always be able to tell, but we need accurate information to
- * work reliably.
- */
-void dpm_set_power_state(struct device * dev, pm_message_t state)
-{
- mutex_lock(&dpm_mtx);
- dev->power.power_state = state;
- mutex_unlock(&dpm_mtx);
-}
-#endif /* 0 */
diff --git a/drivers/base/power/shutdown.c b/drivers/base/power/shutdown.c
index a47ee1b70d2..56e8eaaac01 100644
--- a/drivers/base/power/shutdown.c
+++ b/drivers/base/power/shutdown.c
@@ -44,7 +44,5 @@ void device_shutdown(void)
dev->driver->shutdown(dev);
}
}
-
- sysdev_shutdown();
}
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
deleted file mode 100644
index 26df9b23173..00000000000
--- a/drivers/base/power/suspend.c
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * suspend.c - Functions for putting devices to sleep.
- *
- * Copyright (c) 2003 Patrick Mochel
- * Copyright (c) 2003 Open Source Development Labs
- *
- * This file is released under the GPLv2
- *
- */
-
-#include <linux/device.h>
-#include <linux/kallsyms.h>
-#include <linux/pm.h>
-#include "../base.h"
-#include "power.h"
-
-/*
- * The entries in the dpm_active list are in a depth first order, simply
- * because children are guaranteed to be discovered after parents, and
- * are inserted at the back of the list on discovery.
- *
- * All list on the suspend path are done in reverse order, so we operate
- * on the leaves of the device tree (or forests, depending on how you want
- * to look at it ;) first. As nodes are removed from the back of the list,
- * they are inserted into the front of their destintation lists.
- *
- * Things are the reverse on the resume path - iterations are done in
- * forward order, and nodes are inserted at the back of their destination
- * lists. This way, the ancestors will be accessed before their descendents.
- */
-
-static inline char *suspend_verb(u32 event)
-{
- switch (event) {
- case PM_EVENT_SUSPEND: return "suspend";
- case PM_EVENT_FREEZE: return "freeze";
- case PM_EVENT_PRETHAW: return "prethaw";
- default: return "(unknown suspend event)";
- }
-}
-
-
-static void
-suspend_device_dbg(struct device *dev, pm_message_t state, char *info)
-{
- dev_dbg(dev, "%s%s%s\n", info, suspend_verb(state.event),
- ((state.event == PM_EVENT_SUSPEND) && device_may_wakeup(dev)) ?
- ", may wakeup" : "");
-}
-
-/**
- * suspend_device - Save state of one device.
- * @dev: Device.
- * @state: Power state device is entering.
- */
-
-int suspend_device(struct device * dev, pm_message_t state)
-{
- int error = 0;
-
- down(&dev->sem);
- if (dev->power.power_state.event) {
- dev_dbg(dev, "PM: suspend %d-->%d\n",
- dev->power.power_state.event, state.event);
- }
-
- if (dev->class && dev->class->suspend) {
- suspend_device_dbg(dev, state, "class ");
- error = dev->class->suspend(dev, state);
- suspend_report_result(dev->class->suspend, error);
- }
-
- if (!error && dev->type && dev->type->suspend) {
- suspend_device_dbg(dev, state, "type ");
- error = dev->type->suspend(dev, state);
- suspend_report_result(dev->type->suspend, error);
- }
-
- if (!error && dev->bus && dev->bus->suspend) {
- suspend_device_dbg(dev, state, "");
- error = dev->bus->suspend(dev, state);
- suspend_report_result(dev->bus->suspend, error);
- }
- up(&dev->sem);
- return error;
-}
-
-
-/*
- * This is called with interrupts off, only a single CPU
- * running. We can't acquire a mutex or semaphore (and we don't
- * need the protection)
- */
-static int suspend_device_late(struct device *dev, pm_message_t state)
-{
- int error = 0;
-
- if (dev->bus && dev->bus->suspend_late) {
- suspend_device_dbg(dev, state, "LATE ");
- error = dev->bus->suspend_late(dev, state);
- suspend_report_result(dev->bus->suspend_late, error);
- }
- return error;
-}
-
-/**
- * device_suspend - Save state and stop all devices in system.
- * @state: Power state to put each device in.
- *
- * Walk the dpm_active list, call ->suspend() for each device, and move
- * it to the dpm_off list.
- *
- * (For historical reasons, if it returns -EAGAIN, that used to mean
- * that the device would be called again with interrupts disabled.
- * These days, we use the "suspend_late()" callback for that, so we
- * print a warning and consider it an error).
- *
- * If we get a different error, try and back out.
- *
- * If we hit a failure with any of the devices, call device_resume()
- * above to bring the suspended devices back to life.
- *
- */
-
-int device_suspend(pm_message_t state)
-{
- int error = 0;
-
- might_sleep();
- mutex_lock(&dpm_mtx);
- mutex_lock(&dpm_list_mtx);
- while (!list_empty(&dpm_active) && error == 0) {
- struct list_head * entry = dpm_active.prev;
- struct device * dev = to_device(entry);
-
- get_device(dev);
- mutex_unlock(&dpm_list_mtx);
-
- error = suspend_device(dev, state);
-
- mutex_lock(&dpm_list_mtx);
-
- /* Check if the device got removed */
- if (!list_empty(&dev->power.entry)) {
- /* Move it to the dpm_off list */
- if (!error)
- list_move(&dev->power.entry, &dpm_off);
- }
- if (error)
- printk(KERN_ERR "Could not suspend device %s: "
- "error %d%s\n",
- kobject_name(&dev->kobj), error,
- error == -EAGAIN ? " (please convert to suspend_late)" : "");
- put_device(dev);
- }
- mutex_unlock(&dpm_list_mtx);
- if (error)
- dpm_resume();
-
- mutex_unlock(&dpm_mtx);
- return error;
-}
-
-EXPORT_SYMBOL_GPL(device_suspend);
-
-/**
- * device_power_down - Shut down special devices.
- * @state: Power state to enter.
- *
- * Walk the dpm_off_irq list, calling ->power_down() for each device that
- * couldn't power down the device with interrupts enabled. When we're
- * done, power down system devices.
- */
-
-int device_power_down(pm_message_t state)
-{
- int error = 0;
- struct device * dev;
-
- while (!list_empty(&dpm_off)) {
- struct list_head * entry = dpm_off.prev;
-
- dev = to_device(entry);
- error = suspend_device_late(dev, state);
- if (error)
- goto Error;
- list_move(&dev->power.entry, &dpm_off_irq);
- }
-
- error = sysdev_suspend(state);
- Done:
- return error;
- Error:
- printk(KERN_ERR "Could not power down device %s: "
- "error %d\n", kobject_name(&dev->kobj), error);
- dpm_power_up();
- goto Done;
-}
-
-EXPORT_SYMBOL_GPL(device_power_down);
-
-void __suspend_report_result(const char *function, void *fn, int ret)
-{
- if (ret) {
- printk(KERN_ERR "%s(): ", function);
- print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn);
- printk("%d\n", ret);
- }
-}
-EXPORT_SYMBOL_GPL(__suspend_report_result);
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 2d47517dbe3..f2ed179cd69 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -7,69 +7,6 @@
#include "power.h"
-#ifdef CONFIG_PM_SYSFS_DEPRECATED
-
-/**
- * state - Control current power state of device
- *
- * show() returns the current power state of the device. '0' indicates
- * the device is on. Other values (2) indicate the device is in some low
- * power state.
- *
- * store() sets the current power state, which is an integer valued
- * 0, 2, or 3. Devices with bus.suspend_late(), or bus.resume_early()
- * methods fail this operation; those methods couldn't be called.
- * Otherwise,
- *
- * - If the recorded dev->power.power_state.event matches the
- * target value, nothing is done.
- * - If the recorded event code is nonzero, the device is reactivated
- * by calling bus.resume() and/or class.resume().
- * - If the target value is nonzero, the device is suspended by
- * calling class.suspend() and/or bus.suspend() with event code
- * PM_EVENT_SUSPEND.
- *
- * This mechanism is DEPRECATED and should only be used for testing.
- */
-
-static ssize_t state_show(struct device * dev, struct device_attribute *attr, char * buf)
-{
- if (dev->power.power_state.event)
- return sprintf(buf, "2\n");
- else
- return sprintf(buf, "0\n");
-}
-
-static ssize_t state_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t n)
-{
- pm_message_t state;
- int error = -EINVAL;
-
- /* disallow incomplete suspend sequences */
- if (dev->bus && (dev->bus->suspend_late || dev->bus->resume_early))
- return error;
-
- state.event = PM_EVENT_SUSPEND;
- /* Older apps expected to write "3" here - confused with PCI D3 */
- if ((n == 1) && !strcmp(buf, "3"))
- error = dpm_runtime_suspend(dev, state);
-
- if ((n == 1) && !strcmp(buf, "2"))
- error = dpm_runtime_suspend(dev, state);
-
- if ((n == 1) && !strcmp(buf, "0")) {
- dpm_runtime_resume(dev);
- error = 0;
- }
-
- return error ? error : n;
-}
-
-static DEVICE_ATTR(state, 0644, state_show, state_store);
-
-
-#endif /* CONFIG_PM_SYSFS_DEPRECATED */
-
/*
* wakeup - Report/change current wakeup option for device
*
@@ -143,9 +80,6 @@ static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store);
static struct attribute * power_attrs[] = {
-#ifdef CONFIG_PM_SYSFS_DEPRECATED
- &dev_attr_state.attr,
-#endif
&dev_attr_wakeup.attr,
NULL,
};
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index a9ab30fefff..2b0c601e422 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -142,6 +142,7 @@ void set_trace_device(struct device *dev)
{
dev_hash_value = hash_string(DEVSEED, dev->bus_id, DEVHASH);
}
+EXPORT_SYMBOL(set_trace_device);
/*
* We could just take the "tracedata" index into the .tracedata
@@ -162,6 +163,7 @@ void generate_resume_trace(void *tracedata, unsigned int user)
file_hash_value = hash_string(lineno, file, FILEHASH);
set_magic_time(user_hash_value, file_hash_value, dev_hash_value);
}
+EXPORT_SYMBOL(generate_resume_trace);
extern char __tracedata_start, __tracedata_end;
static int show_file_hash(unsigned int value)
@@ -170,7 +172,8 @@ static int show_file_hash(unsigned int value)
char *tracedata;
match = 0;
- for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ; tracedata += 6) {
+ for (tracedata = &__tracedata_start ; tracedata < &__tracedata_end ;
+ tracedata += 2 + sizeof(unsigned long)) {
unsigned short lineno = *(unsigned short *)tracedata;
const char *file = *(const char **)(tracedata + 2);
unsigned int hash = hash_string(lineno, file, FILEHASH);
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 18febe26caa..ac7ff6d0c6e 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -139,7 +139,7 @@ int sysdev_class_register(struct sysdev_class * cls)
kobject_name(&cls->kset.kobj));
INIT_LIST_HEAD(&cls->drivers);
cls->kset.kobj.parent = &system_subsys.kobj;
- kset_set_kset_s(cls, system_subsys);
+ cls->kset.kobj.kset = &system_subsys;
return kset_register(&cls->kset);
}
@@ -153,25 +153,22 @@ void sysdev_class_unregister(struct sysdev_class * cls)
EXPORT_SYMBOL_GPL(sysdev_class_register);
EXPORT_SYMBOL_GPL(sysdev_class_unregister);
-
-static LIST_HEAD(sysdev_drivers);
static DEFINE_MUTEX(sysdev_drivers_lock);
/**
* sysdev_driver_register - Register auxillary driver
- * @cls: Device class driver belongs to.
+ * @cls: Device class driver belongs to.
* @drv: Driver.
*
- * If @cls is valid, then @drv is inserted into @cls->drivers to be
+ * @drv is inserted into @cls->drivers to be
* called on each operation on devices of that class. The refcount
* of @cls is incremented.
- * Otherwise, @drv is inserted into sysdev_drivers, and called for
- * each device.
*/
-int sysdev_driver_register(struct sysdev_class * cls,
- struct sysdev_driver * drv)
+int sysdev_driver_register(struct sysdev_class *cls, struct sysdev_driver *drv)
{
+ int err = 0;
+
mutex_lock(&sysdev_drivers_lock);
if (cls && kset_get(&cls->kset)) {
list_add_tail(&drv->entry, &cls->drivers);
@@ -182,10 +179,13 @@ int sysdev_driver_register(struct sysdev_class * cls,
list_for_each_entry(dev, &cls->kset.list, kobj.entry)
drv->add(dev);
}
- } else
- list_add_tail(&drv->entry, &sysdev_drivers);
+ } else {
+ err = -EINVAL;
+ printk(KERN_ERR "%s: invalid device class\n", __FUNCTION__);
+ WARN_ON(1);
+ }
mutex_unlock(&sysdev_drivers_lock);
- return 0;
+ return err;
}
@@ -251,12 +251,6 @@ int sysdev_register(struct sys_device * sysdev)
* code that should have called us.
*/
- /* Notify global drivers */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->add)
- drv->add(sysdev);
- }
-
/* Notify class auxillary drivers */
list_for_each_entry(drv, &cls->drivers, entry) {
if (drv->add)
@@ -272,11 +266,6 @@ void sysdev_unregister(struct sys_device * sysdev)
struct sysdev_driver * drv;
mutex_lock(&sysdev_drivers_lock);
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->remove)
- drv->remove(sysdev);
- }
-
list_for_each_entry(drv, &sysdev->cls->drivers, entry) {
if (drv->remove)
drv->remove(sysdev);
@@ -293,7 +282,7 @@ void sysdev_unregister(struct sys_device * sysdev)
*
* Loop over each class of system devices, and the devices in each
* of those classes. For each device, we call the shutdown method for
- * each driver registered for the device - the globals, the auxillaries,
+ * each driver registered for the device - the auxillaries,
* and the class driver.
*
* Note: The list is iterated in reverse order, so that we shut down
@@ -320,13 +309,7 @@ void sysdev_shutdown(void)
struct sysdev_driver * drv;
pr_debug(" %s\n", kobject_name(&sysdev->kobj));
- /* Call global drivers first. */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->shutdown)
- drv->shutdown(sysdev);
- }
-
- /* Call auxillary drivers next. */
+ /* Call auxillary drivers first */
list_for_each_entry(drv, &cls->drivers, entry) {
if (drv->shutdown)
drv->shutdown(sysdev);
@@ -354,12 +337,6 @@ static void __sysdev_resume(struct sys_device *dev)
if (drv->resume)
drv->resume(dev);
}
-
- /* Call global drivers. */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->resume)
- drv->resume(dev);
- }
}
/**
@@ -393,16 +370,7 @@ int sysdev_suspend(pm_message_t state)
list_for_each_entry(sysdev, &cls->kset.list, kobj.entry) {
pr_debug(" %s\n", kobject_name(&sysdev->kobj));
- /* Call global drivers first. */
- list_for_each_entry(drv, &sysdev_drivers, entry) {
- if (drv->suspend) {
- ret = drv->suspend(sysdev, state);
- if (ret)
- goto gbl_driver;
- }
- }
-
- /* Call auxillary drivers next. */
+ /* Call auxillary drivers first */
list_for_each_entry(drv, &cls->drivers, entry) {
if (drv->suspend) {
ret = drv->suspend(sysdev, state);
@@ -436,18 +404,7 @@ aux_driver:
if (err_drv->resume)
err_drv->resume(sysdev);
}
- drv = NULL;
-gbl_driver:
- if (drv)
- printk(KERN_ERR "sysdev driver suspend failed for %s\n",
- kobject_name(&sysdev->kobj));
- list_for_each_entry(err_drv, &sysdev_drivers, entry) {
- if (err_drv == drv)
- break;
- if (err_drv->resume)
- err_drv->resume(sysdev);
- }
/* resume other sysdevs in current class */
list_for_each_entry(err_dev, &cls->kset.list, kobj.entry) {
if (err_dev == sysdev)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 15:54:05 +0000